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SSRN 2022年

作者： Yang, Bairen Wang, Jiajie Shang, Qingqing Ding, Cheng Sun, Zhuqiu School of Environmental Science and Engineering Yancheng Institute of Technology Yancheng224051 China Environmental Simulation and Pollution Control State Key Joint Laboratory School of Environment Tsinghua University Beijing100084 China

Hydrophobic and highly toxic VOCs removal has always been a challenge for biotrickling filters (BTFs). In this study, rhamnolipid chelating La (III) or Nd (III) were used to improve gaseous m -dichlorobenzene removal, and their effects on biofilm growth were investigated. The results showed that the optimal concentrations of rhamnolipid, La (III) and Nd (III) were 110 mg/L, 0.2 mg/L and 0.4 mg/L, respectively. The rhamnolipid chelating La (III) or Nd (III) significantly increased the average m -dichlorobenzene elimination capacity by 24% and 29% respectively, and the average wet weights of biomass in BTFs from 11 kg/m 3 to 15 kg/m 3 in BTFs. Microbial community functional genes about biofilm growth and m -dichlorobenzene removal were increased by rhamnolipid chelating La (III) or Nd (III). In addition, the changes of bacterial characteristics indicated that rhamnolipid chelating La (III) or Nd (III) can improve the membrane permeability, extracellular polymeric substance (EPS) production, catechol 2,3 dioxygenase (C23O) enzyme and chlorobenzene dioxygenase activity, and this partly explains why rhamnolipid chelating La (III) or Nd (III) can improve simultaneously m -dichlorobenzene removal and biofilm growth. These results demonstrate that rhamnolipid chelating La (III) or Nd (III) have the potential to improve the performance of BTFs treating hydrophobic and highly toxic VOCs. © 2022, The Authors. All rights reserved.

关键词： Biofilms

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Pilot-scale phosphorus polishing from wastewater using nano-metal oxides confined in millimeter-sized polymeric hosts: Performance and sustainability analysis

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Chemical Engineering Journal 2025年 517卷

作者： Xu, Peizhi Wang, Mingming Zhao, Xin Zhang, Yanyang Zhang, Xiaolin Yang, Wenlan Hua, Ming Zhang, Weiming Pan, Bingcai State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China School of Environment Nanjing University Nanjing210023 China State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal and Resources Reuse Nanjing210023 China School of the Environmental Science and Engineering Yangzhou University Yangzhou225127 China

Nanomaterial-enabled technologies hold significant promise for advanced water treatment, however, very few cases are available particularly in pilot or field applications. This study presents a comprehensive evaluation of a pilot-scale (50 t/d) phosphorus treatment system employing nanocomposite materials at a municipal wastewater treatment plant (MWWTP) near Taihu Lake, China. Three polymeric nanocomposites, i.e., HZO-201 (Zr-based), HFO-201 (Fe-based) and La-201 (La-based), were utilized in the fixed-bed adsorption system for comparative analysis. The removal efficiencies of total phosphorous (TP), orthophosphate (ortho-P) and organic P, along with the variation of pH, conductivity and other major co-existing substances were recorded for continuous 180-day operation with the breakthrough point set at 0.10 mg/L (TP). All three materials were able to reduce TP from an average of 0.24 to 0.02 mg/L. The effective treatable volumes before breakthrough reached 39,600, 46,440 and 50,040 bed volumes (BV) for HFO-201, HZO-201 and La-201, respectively. Further investigations using dissolved organic matter (DOM) fractionation, fluorescence excitation-emission matrix imaging, and molecular size screening identified small organic acids as key contributors to negatively influence efficiency and material reusability. While calcium and fluoride accumulation significantly altered the crystal structure of La-201 post-regeneration. Statistical analysis, including Pearson correlation and principal component analysis, confirmed and highlighted the significant negative impacts of calcium, fluoride, and dissolved organic matters (DOMs) on long-term phosphorus removal. Economic analysis estimated a competitive treatment cost of 0.70–0.80 USD per kilogram of phosphorus removed, while the life cycle assessment identified major environmental impacts from electricity and NaOH usage during material production, implementation, and regeneration. © 2025 Elsevier B.V.

关键词： Effluents

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Surface Coordination environment Engineering on Ptxcu1-X Alloy Catalysts for the Efficient Photocatalytic Reduction of Co2 to Ch4

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SSRN 2023年

作者： Wang, Xin Liao, Haohong Li, Xue Ji, Jiawei Wu, Cong Tong, Qing Tan, Wei Wan, Haiqin Dong, Lin State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China State Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China Jiangsu Key Laboratory of Vehicle Emissions Control Center of Modern Analysis Nanjing University Nanjing210023 China

Alloy catalysts have been reported to be robust in catalyzing various heterogeneous reactions. In this work, aimed at understanding the effect of the surface coordination environment on the catalytic performance of alloy catalysts, a series of PtxCu1-x supported on anatase-phase TiO2 were developed and applied in photocatalytic CO2 reduction reaction. According to the results of catalytic performance evaluation, it was found that the photocatalytic CO2 reduction activity on PtxCu1-x/Ti showed a volcanic change, the highest CH4 production was achieved on Pt0.5Cu0.5/Ti. Further systematic characterizations and theoretical calculations revealed Pt0.5Cu0.5/Ti facilitated the generation of more Cu-Pt paired sites which would favor a bridge adsorption configuration of CO2 and facilitate the electron transfer, thus resulting in the highest photocatalytic CO2 reduction efficiency on Pt0.5Cu0.5/Ti. This work provided new insights into the design of robust CO2 reduction photocatalysts with high CH4 production from the perspective of surface coordination environment engineering. © 2023, The Authors. All rights reserved.

关键词： Titanium dioxide

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Unraveling the Impact and Mechanisms of Microplastics in Sludge Treatment Systems on Volatile Fatty Acids During Anaerobic Fermentation: Exploration of Microbial Communities and Metabolic Pathways

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SSRN 2024年

作者： Zhang, Shuai Huang, Xiao Dong, Wenyi Fu, Yicheng Gao, JingSi Zhou, Guorun Qu, Yanhui Cao, Kai Zheng, Zhihao Li, Zhiying Teng, Xindong Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China Shenzhen518055 China State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin150090 China Shenzhen Polytechnic Shenzhen518055 China

With the increase in plastic products, the content of microplastics in waste activated sludge (WAS) has also increased, affecting its subsequent process. This research probed into the influence of predominant microplastics on the generation of volatile fatty acids (VFAs) throughout the anaerobic digestion process of WAS. The results revealed that the VFA production in the microplastic addition group was reduced compared to the control group, with reductions ranging from 13.49% to 29.57%. While microplastics accelerated the dissolution of WAS, they inhibited the processes of hydrolysis and acidification, affected the proliferation of key microbes (norank_f_Bacteroidetes_vadinHA17, Ottowia, and Propioniclava), and decreased the abundance of genes related to hydrolysis and acidification (pfkb, gpmI, ilvE, aces). Furthermore, microplastics reduced the levels of key hydrolytic and acidogenic enzymes, suppressing hydrolysis and acidification. This study revealed the influence exerted by microplastics on the processof anaerobic digestion, which contributes to sludge reduction and resource utilization. © 2024, The Authors. All rights reserved.

关键词： Volatile fatty acids

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Adsorption behavior and mechanism of different types of (aged) microplastics for napropamide in soils

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Chemosphere 2024年 364卷 143211页

作者： Wang, Qing Ge, Wenjie Shi, Renyong He, Jian Li, Shuchang Zhu, Changqing Zhang, Xiaohui Shi, Mali Ni, Ni Wang, Na College of Energy and Environmental Engineering Hebei Key Laboratory of Air Pollution Cause and Impact Hebei Engineering Research Center of Sewage Treatment and Resource Utilization Hebei University of Engineering Handan056038 China Nanjing Institute of Environmental Science Ministry of Ecology and Environment Nanjing210042 China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences P.O. Box 821 Nanjing210008 China Key Laboratory of Pesticide Environmental Assessment and Pollution Control Ministry of Ecology and Environment Nanjing210042 China

The role of microplastics (MPs) as pollutant carriers and their influence on the fate of organic pollutants has received considerable attention. However, the impacts of MPs on the adsorption of amide herbicides in soil, have not been investigated. In this study, non-biodegradable (polyethylene, PEM) and biodegradable (polybutylene adipate terephthalate, PBATM) MPs were aged by exposure to one month of ultraviolet irradiation. The impacts of MPs on the adsorption of napropamide (Nap) in two agricultural soils (black soil [BS] and fluvo-aquic soil [CS]) were investigated through batch experiments. The findings suggested that the adsorption of Nap onto PEM was mainly governed by physical processes, while, chemical mechanisms, should not be overlooked on PBATM. With the addition of 0.2% MPs, the maximum adsorption capacity (Qm) and adsorption distribution coefficient (KF) of soil containing PEM (soil-PEM) were higher than that of soil-PBATM, however, the Qm and KF values of soil-PBATM for Nap were higher when the addition of MPs was 2%. After UV aging, the increased specific surface area of MPs led to an increased adhesion of soil particles. These were attributed to the different surface properties and concentrations of different (aged) MPs, resulting in differences in the inhibition effect by soil particles. The adhesion of soil particles was confirmed by X-ray photoelectron spectroscopy. Additionally, regardless of the addition of MPs, the Qm values of BS for Nap were higher than those for CS. In summary, MPs can alter the adsorption of Nap in soil, influencing both its mobility within the soil ecosystem and the environmental risk. © 2024 Elsevier Ltd

关键词： Soil pollution

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Emerging and legacy perfluoroalkyl and polyfluoroalkyl substances (PFAS) in surface water around three international airports in China

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Chemosphere 2023年 344卷 140360页

作者： Liu, Jing Zhao, Zhen Li, Jie Hua, Xia Zhang, Boxuan Tang, Caijun An, Xinyi Lin, Tian College of Marine Ecology and Environment Shanghai Ocean University Shanghai201306 China Handan Ecology and Environment Bureau Hebei 056008 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a large category of crucial environmental contaminants of global concerns. There are limited data on PFAS in surface water around international airports in China. The present study investigated the concentrations, distributions, and sources of emerging and legacy PFAS in surface waters around Beijing Capital International Airport (BC), Shanghai Pudong International Airport (SP), and Guangzhou Baiyun International Airport (GB) in China. Twenty-seven target compounds were quantified. The Σ27PFAS concentrations ranged from 19.0 to 62.8 ng/L (mean 36.1 ng/L) in BC, 25.6–342 ng/L (mean 76.0 ng/L) in SP, 7.35–72.7 ng/L (mean 21.6 ng/L) in GB. The dominant compound was perfluorooctanoic acid (PFOA), which accounted for an average of 27% (5%–65%) of the Σ27PFAS concentrations. The alternatives with –C6F12- group had detection frequencies ranging from 72% to 100%. The partition coefficient results indicate that the longer chain PFAS (C > 8) tend to be more distributed in the particle phase. Fifty suspect and nontarget PFAS were identified. In GB, 44 PFAS were identified, more than SP of 39 and BC of 38. An ultra short-chain (C = 2) precursor, N-methylperfluoroethanesulfonamido acetic acid (MeFEtSAA), was identified and semi-quantified. Domestic wastewater discharges might be the main sources around BC, while industrial and aviation activities might be the main sources around SP and GB. © 2023 Elsevier Ltd

关键词： Surface waters

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Rising attention and shifting themes in green supply chain discourse: Evidence from Weibo (2012–2024)

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Journal of Cleaner Production 2025年 518卷

作者： Wang, Shi Hu, Yaxin Zhao, Zhan Cai, Jiacong Yang, Jianxun Liu, Miaomiao Fang, Wen Ma, Zongwei Bi, Jun State Key Laboratory of Water Pollution Control and Green Resource Recycling School of the Environment Nanjing University Nanjing210023 China Institute for the Environment and Health Nanjing University Suzhou Campus Suzhou215163 China Nanjing University of Information Science & Technology Nanjing210044 China Basic Science Center for Energy and Climate Change Beijing100081 China

Social media have become a crucial platform for public engagement and policy discourse in China, playing an increasingly important role in green supply chain development. This study analyzes 0.24 million original Weibo posts from 2012 to 2024, the longest time series to date, to examine the evolution of green supply chain discourse. We built a data analysis framework to capture spatiotemporal trends, thematic shifts, user heterogeneity across industry contexts. Our findings show that public attention to green supply chains surged after 2020, coinciding with major national strategies such as the Dual Carbon goal and the Beautiful China initiative. We identified 42 real-world social events driving these hot discussions, ranging from early environmental incidents to key policy meetings and releases in later years. The discourse is concentrated in economically developed coastal regions and is mainly shaped by enterprises, government agencies, and media actors. Over time, the thematic focus shifted from environmental protection topics to supply chain management related items, including green production, logistics, and sales. This trend reflects growing interest in practical, system-level approaches to green implementation, highlighting corporate responsibility, policy impact, and supply chain management. Industry-level analysis reveals distinct engagement patterns, with logistics and electronics sectors leading the online conversation. The six key industries also differ in their emphasis on five key topics: green manufacturing, green logistics, economic benefits, policy planning, and environmental protection and low carbon initiative. Our findings provide valuable guidance for tailoring sector-specific policy interventions to promote green supply chain management. © 2025 Elsevier Ltd

关键词： Industrial electronics

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Immobilizing ultrafine bimetallic PtAg alloy onto uniform MnO_(2) microsphere as a highly active catalyst for CO oxidation

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Chinese Chemical Letters 2021年第6期32卷 2057-2060页

作者： Shengpeng Mo Peng Peng Yinchang Pei Taiming Shen Qinglin Xie Mingli Fu Yunfa Chen Daiqi Ye College of Environment Science and Engineering Guilin University of TechnologyGuilin 541004China School of Environment and Energy South China University of TechnologyGuangzhou 510006China Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control Guilin University of TechnologyGuilin 541004China State Key Laboratory of Multi-Phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Herein,a facile glycol reduction route is successful employed to synthesize bimetallic Pt Ag alloys with homogeneous distribution of sizes and *** studies reveal that the ultrafine Pt Ag alloys with well-defined sizes from around 3.3 nm to 5.8 nm are immobilized onto MnO_(2)microsphere,which remarkably enhances the catalytic performances for CO ***,quasi in-situ X-ray photoelectron spectroscopy(XPS)result reveals that both Mn and Pt ions on the surface of catalysts would realize alternating reduction-oxidation by CO and O_(2)molecules,and the oxygen vacancy sites could be replenished and excited by gas-phase O_(2).

关键词： Bimetallic alloys PtAg NPs MnO_(2) Quasi in-situ XPS CO oxidation

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Resilience Assessment of Subway System to Waterlogging Disaster

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SSRN 2024年

作者： Xu, Fei Fang, Delin Chen, Bin Wang, Hao State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University Beijing100875 China Faculty of Geographical Science Beijing Normal University Beijing100875 China State Key Joint Laboratory of Environmental Simulation and Pollution Control China Faculty of Architecture Civil and Transportation Engineering Beijing University of Technology Beijing100124 China

The subway system is experiencing significant challenges from waterlogging due to climate change and urbanization, and the enclosed underground structure of the system makes this issue worsen. This study proposed a "Stability-Resistance-Recovery" assessment framework focused on subway system waterlogging resilience (SSWR) based on the system performance curve. This framework considered various factors, including the inundation situation simulated by hydrological model, natural environment, subway information, and sociodemographic information. A case study in Beijing showed that the stability and resistance were the leading factors affecting the SSWR. Among all the indexes, water bodies surface percentage, evening peak departure time interval, and population density had the strongest impacts on the SSWR. Generally, the subway system exhibited a relatively low level of waterlogging resilience, with 51.9% of stations indicating very low or low levels, mainly distributed on subway lines 1, 2, 4, 5, 7, 9, and 10. Stations at medium SSWR were dispersed throughout the areas neighboring stations at very low or low SSWR. Stations at very high or high SSWR were minimal and scattered in peripheral areas. This study identifies the resilience level of subway stations and provides theoretical support for decision-makers to allocate waterlogging prevention and recovery resources for subway system. © 2024, The Authors. All rights reserved.

关键词： Recovery

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Nanostructured Pt@RuO_(x) catalyst for boosting overall acidic seawater splitting

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Chinese Journal of Structural Chemistry 2024年第1期43卷 6-15页

作者： Zimo Peng Quan Zhang Gaocan Qi Hao Zhang Qian Liu Guangzhi Hu Jun Luo Xijun Liu Institute for New Energy Materials&Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin300384China School of Materials Science and Engineering Tianjin University of TechnologyTianjin 300384China Institute for Advanced Study Chengdu UniversityChengdu610106China Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming650091China ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaLonghua DistrictShenzhen518110China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsMOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning530004China

In the domain of acidic water splitting,designing bifunctional catalysts that marry high activity with enduring stability is a formidable ***,we have constructed platinum-containing ruthenium oxide nanoparticles(Pt@RuO_(x)NPs)to achieve excellent overall water splitting performance in acidic ***@RuO_(x)NPs demonstrate exceptional catalytic activity for both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in acidic seawater,requiring overpotentials of only 20 and 157 mV,respectively to achieve a current density of 10 mA cm^(-2).Furthermore,in 0.5 M H_(2)SO_(4),this catalyst exhibits high HER(19 mV)and OER(236 mV)catalytic *** two-electrode water splitting system composed of bifunctional Pt@RuO_(x)NPs requires cell voltages of only 1.442 and 1.465 V to deliver a current density of 10 mA cm^(-2)in acidic seawater and 0.5 M H_(2)SO_(4).Remarkably,this catalyst displays remarkable stability in the water splitting *** is shown that the introduction of Pt could augment oxygen vacancies and enhance catalytic activity *** synergy between Pt and Ru further contributes to the improved ***,we have observed that acidic seawater holds distinct advantages for acidic water splitting,along with a thorough exploration of the relationship between Cl^(-)concentration and catalytic *** study not only provides a strategy to improve the catalytic activity and stability of ruthenium-based catalysts for water splitting in acidic environments,but also unveils the promoting effect of Cl^(-)on the catalytic activity in acidic water splitting.

关键词： Acidic water splitting Bifunctional catalysts Pt@RuOx nanoparticles Synergistic effect

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